A series combination of $$n_1$$ capacitors, each of capacity $$C_1$$ is charged by source of potential difference $$4V$$. When another parallel combination of $$n_2$$ capacitors each of capacity $$C_2$$ is charged by a source of potential difference $$V$$, it has the same total energy stored in it as the first combination has. The value of $$C_2$$ in terms of $$C_1$$ is then

A

$$16\dfrac{n_2}{n_1}C_1$$

B

$$\dfrac{2C_1}{n_1 n_2}$$

C

$$2\dfrac{n_2}{n_1}C_1$$

D

$$\dfrac{16C_1}{n_1 n_2}$$